Packing foe steam engines



J. H. TUCK.

PACKING PoR STEAM ENGINES, am..

No. 13,145. Patented June 26, 1855.

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UNITED STATES PATENT OFFICE.

JOSEPH H. TUCK, OF PALL MALL, ENGLAND.

PACKING FOR STUFFING-BOXES, 850.

Specification of Letters Patent No. 13,145, dated June 26, 1855.

To all whom t may concern Be it known that I, JOSEPH HENRY TUoK, a citizen of the United States, but now residing at Pall Mall, in the county of Middlesex, England, have invented or produced a new and useful Article of Manufacture for Packing the Pistons, Cylinders, or Valves of Steam-Engines, or for other similar Purposes; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, which represent in sections modified forms of the manner in which the article is prepared.

My invention relates to an improved manner or mode of making or forming packing for pistons, valves or other parts of steam engines and for like purposes, from india rubber and canvas saturated with india rubber or other suitable material or composition.

To enable others skilled in the artto make and use my invention I will proceed to describe the same with reference to the drawings.

I first take canvas or other suitable material and saturate it with a solution of india rubber or other equivalent composition. I then cutthe canvas thus prepared in a diagonal manner into strips of any required width, cement the diagonal ends together so as to form any length of fillet required, then roll it up into a roll and allow it to cement in a firm but elastic or flexible roll of any suitable diameter required. In cases where greater elasticity is required, I roll the canvas around a core or center piece of india rubberor other suitable elastic material.

Figure l, represents a section of the packing which is rolled up from its own center, and may be round or nearly so. Fig. 2, represents another form of rolling up the saturated canvas when it is drawn down or rolled loosely at one point, and tight at the opposite point. By this manner of rolling the packing may have a conical form, so as to be used in conical seats and for giving it the exact conical form required, it may be run through suitably shaped rolls to compress it into the shape of the rolls, or the grooves therein. Fig. 3, represents the canvas rolled around an elastic center or core of rubber a, representing the core, and b the canvas. This core may be square, round, oblong, oval, or of any desired form which the roll of packing is designed to possess. Fig. 4, represents a hollow or cylindrical core, or it may be a section of a cylinder of prepared rubber or other similar material, around which the canvas is rolled, and Fig. 5, represents the combined forms shown in Figs. l and t, when the canvas is firstrolled from its own center, and is then rolled around the core to embrace both its own coils, and the core in its outer folds. In all these figures but a modification of one general plan is illustrated viz: the rolling of canvas first saturated as described into a fillet in any reasonable length and of any diameter from which, packing may be cut in lengths as required. A packing such as herein described has heretofore not been known as an article of commerce or of manufacture, and as such I claim to be the first inventor or producer of it. Fig. G, represents a vertical section through a packing box showing the manner of applying the packing, in which A represents the packing box and B the piston rod. D is a ring in the lower end of the packing box, against a divided cylindrical block E, with a conical opening through it, rests. a, a, a, a. represent the rings of packing which are forced down by the head F, and in being forced down as the packing wears, the conical form of the opening in E, keeps it tight up against the piston rod. Any of the forms of packing represented in the several figures l, 2, 3, 4, 5, may be used-that represented at Fig. 2 being more peculiarly adapted to the lower part of the packing box, on account of the conical form of the block E behind it.

Piston heads and valves or other places may be packed in a similar manner, the packing being cut off in suitable lengths to suit the thing to be packed. By this mode of manufacture it will be seen that each fold of the packing in contact with the rubbing or moving surface must be entirely worn away and cannot be drawn out by the rubbing surface (as is frequently the case when packing is made in concentric folds of prepared canvas) being held in .its place by the ring above and below it.

Having thus fully described the nature of my invention and its application what I in connection with the india rubber coi-e 0i' other elastic material or Without, as herein 10 set torth.

J. H. TUCK.

fitnesses A. B. S'ioUGi-ITON, Trios. H. UPPERMAN. 

